What is the Strait of Hormuz, and why does its closure matter so much to the global economy?

Dr. Warren Mabee, Professor in Geography and Planning and former Director of the School of Policy Studies, discusses the threatened closure of the Strait of Hormuz and the related economic impacts in The Conversation. 

"What is the Strait of Hormuz, and why does its closure matter so much to the global economy?" The Conversation Canada.